From mboxrd@z Thu Jan 1 00:00:00 1970 From: ng0 Subject: Re: flashrom package needs update Date: Sat, 20 Aug 2016 08:24:09 +0000 Message-ID: <87h9afvoeu.fsf@we.make.ritual.n0.is> References: <87wpjdckvv.fsf@we.make.ritual.n0.is> <87pop55hzb.fsf@we.make.ritual.n0.is> <874m6g2lsx.fsf@openmailbox.org> Mime-Version: 1.0 Content-Type: text/plain Return-path: Received: from eggs.gnu.org ([2001:4830:134:3::10]:38993) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bb1Ze-0005qU-OJ for guix-devel@gnu.org; Sat, 20 Aug 2016 04:24:16 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bb1Zd-0002eJ-Av for guix-devel@gnu.org; Sat, 20 Aug 2016 04:24:14 -0400 Received: from mithlond.libertad.in-berlin.de ([2001:67c:1400:2490::1]:56367 helo=beleriand.n0.is) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bb1Zc-0002ce-W6 for guix-devel@gnu.org; Sat, 20 Aug 2016 04:24:13 -0400 In-Reply-To: <874m6g2lsx.fsf@openmailbox.org> List-Id: "Development of GNU Guix and the GNU System distribution." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: guix-devel-bounces+gcggd-guix-devel=m.gmane.org@gnu.org Sender: "Guix-devel" To: Kei Kebreau Cc: guix-devel@gnu.org Kei Kebreau writes: > [ Unknown signature status ] > > ng0 writes: > >> ng0 writes: >> >>> Someone should update flashrom to 0.9.9. (https://www.flashrom.org/Flashrom/0.9.9) >>> I tried and do not understand enough of flashrom to update the patch we need. >> >> Additionally we need to check what's different about GuixSD that this >> happens: >> >> root@shadowwalker /home/ng0# flashrom -p internal -w libreboot_latest_stable.rom >> flashrom v0.9.7-r1711 on Linux 4.7.0-gnu (x86_64) >> flashrom is free software, get the source code at http://www.flashrom.org >> >> Calibrating delay loop... OK. >> Error accessing high tables, 0x100000 bytes at 0x000000007dad6000 >> /dev/mem mmap failed: Operation not permitted >> Failed getting access to coreboot high tables. >> ======================================================================== >> WARNING! You seem to be running flashrom on an unsupported laptop. >> Laptops, notebooks and netbooks are difficult to support and we >> recommend to use the vendor flashing utility. The embedded controller >> (EC) in these machines often interacts badly with flashing. >> See the manpage and http://www.flashrom.org/Laptops for details. >> >> If flash is shared with the EC, erase is guaranteed to brick your laptop >> and write may brick your laptop. >> Read and probe may irritate your EC and cause fan failure, backlight >> failure and sudden poweroff. >> You have been warned. >> ======================================================================== >> Aborting. >> Error: Programmer initialization failed. >> >> >> >> I value that GuixSD seems to be more protective than any other system in >> that regard where I could just become root and run flashrom, but maybe >> we need to make an exception for flashrom and similar software. >> Booting into ubuntu-live and running a statically linked binary of >> flashrom just made me flash libreboot stable. I want to do this from >> within GuixSD. > > This is mentioned in Libreboot's documentation (top of the page here: > https://libreboot.org/docs/install/index.html). The GuixSD Linux-libre > kernel is configured with CONFIG_STRICT_DEVMEM enabled, which I presume > Libreboot uses for software-based flashing. > > If you add linux to the list "use-package-modules" in your system > configuration and add (kernel-arguments '("iomem=relaxed")) to your > "operating-system" configuration, the flashing utility will work correctly. Oh, interesting. Thanks for the explanation. Do you think we should add a pointer to this somewhere in the documentation, or add a link pointing to this email thread? I feel like this needs to be explained or be visible somewhere at our side. I think I want to keep this feature, and reconfigure the system only for updating libre/coreboot. Thanks -- ng0 For non-prism friendly talk find me on http://www.psyced.org